- News Home
24 April 2014 11:45 am ,
Vol. 344 ,
Major climate data sets have underestimated the rate of global warming in the last 15 years owing largely to poor data...
The tsetse fly is best known as the vector for the trypanosome parasites that cause sleeping sickness and a disease in...
The National Institutes of Health is revising its "two strikes" rule, which allowed researchers only one chance to...
By stabilizing the components of retromers, molecular complexes that act like recycling bins in cells, a recently...
Fossil fuels power modern society by generating heat, but much of that heat is wasted. Semiconductor devices called...
Researchers are gaining insights into what made Supertyphoon Haiyan so powerful and devastating through post-storm...
Millions around the world got a first-hand look at what it was like to be in Tacloban while it was pummeled by...
- 24 April 2014 11:45 am , Vol. 344 , #6182
- About Us
ScienceShot: Strong Jaws, Tiny Index Fingers
14 February 2012 7:02 pm
Kirk Douglas may have nabbed man's-man roles in Spartacus and other films by virtue of his jutting jaw. But casting directors seem to have missed one of the actor's manlier traits: a stubby index finger. Scientists have known that men boasting traditionally more masculine mandibles—think Douglas's iconic cleft chin—also tend to have short pointer fingers relative to their ring fingers. But no one knew if the trend held true for kids not yet through puberty. To find out, researchers photographed 17 boys between 4 and 11 years old. And, sure enough, those with more petite trigger fingers also bore bigger, rounder chins (at right). They also had smaller foreheads and thicker eyebrows, the group reports online in the Proceedings of the Royal Society B. High levels of in utero testosterone may help to shape both the digit mismatch and the lads' faces, pointing the importance of the hormone even early in life. Call it the Spartacus, Jr. effect.
See more ScienceShots.